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Online since: July 2015
Authors: Chung Yi Huang, Jiing Yih Lai, Yu Kai Chiu, Chia Hsiang Hsu, Yao Chen Tsai, Ming Hsuan Wang
On the Development of Virtual Inner Loops for Feature Recognition Ming-Hsuan Wang1*, Jiing-Yih Lai1, Yu-Kai Chiu1 Chia-Hsiang Hsu2, Yao-Chen Tsai2, and Chung-Yi Huang2 1Department of Mechanical Engineering, National Central University, Jhongli, Taiwan 2CoreTech System (Moldex3D) Co., Ltd., Hsinchu, Taiwan * a7512cs@hotmail.com Keywords: Virtual inner loop, Feature recognition, Hole recognition, Rib recognition Abstract Typical feature recognition algorithms in industrial applications are primarily used for solving cases where a feature locates on a single face only.
The loop data identified within a face or across multiple faces is the key point in the proposed algorithm for the recognition of different kinds of features.
Fan, Automatic small depression feature recognition from solid B-rep models for meshing, 2011 International Conference on Electrical and Control Engineering, ICECE 2011 - Proceedings, (2011) 4386-4389
Kim, Recognition of pass features for automatic parting surface generation in injection moulds, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 216 (2002) 783-796
Huang, On the Development of Holes Recognition Algorithm for CAE Applications, 2014 International Conference on Machining, Materials and Mechanical Technologies, (2014) to appear.
Online since: September 2013
Authors: Chanchana Thanachayanont, Anek Charoenphakdee, Warawoot Thowladda, Chesta Ruttanapun, Phumin Jindajitawat, Worakarn Neeyakorn
Results And Disscussion Materials Charecterization.
Goldsmind, “Thermoelectric basic principles and new materials developments”, Germany, Spinger, 2011
Pryds, Materials 3 (2010) 318–328
Engineer.
Sugihara, Materials Transactions, 46 (2005) 1462 – 1465
Online since: July 2006
Authors: Carlos H. Cáceres
Cáceres Co-operative Research Centre for Cast Metals Manufacturing (CAST) Materials Engineering, School of Engineering, The University of Queensland, Brisbane QLD 4072, Australia c.caceres@minmet.uq.edu.au Keywords: Aluminium casting alloys, Magnesium casting alloys; greenhouse gases; penalty functions; Pidgeon process.
The materials considered are listed in Table 1.
Table 1: The materials studied and the upper-lower limits of their relevant properties.
Johnson, Advanced Materials and Processes 160, (2002) 62
Shibaike, Materials & Design 17, (1996) 11
Online since: January 2013
Authors: Yoshihisa Matsumoto, Hiroshi Yukawa, Tomonori Nambu
Matsumoto3, c 1Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University, Japan 2Department of Materials Science and Engineering, Suzuka National College of Technology, Japan 3Department of Mechanical Engineering, Oita National College of Technology, Japan ahiroshi@numse.nagoya-u.ac.jp, bnambu@mse.suzuka-ct.ac.jp, cmatumoto@oita-ct.ac.jp, Keywords: hydrogen permeable membrane, hydrogen diffusion coefficient, activation energy, Nb–based alloy, hydrogen flux, hydrogen permeability, hydrogen solubility, resistance to hydrogen embrittlement, Ductile–to–Brittle Transition hydrogen Concentration (DBTC).
Hydrogen permeable alloy membranes are important key materials for the hydrogen separation and purification technologies.They are also important for the hydrogen production by membrane reactors.
Therefore, there has been a great demand for the development of new hydrogen permeable alloys in order to reduce the material cost as well as to improve the hydrogen permeability.
The purities of the raw materials used in this study are 99.96 mass% for Nb and 99.95 mass% for W and Mo.
Acknowledgement The research is partially supported by Grant–in–Aid for Scientific Research from Japan Society for the Promotion of Science (JSPS), Research Foundation for Materials Science and Iketani Science and Technology Foundation.
Online since: May 2011
Authors: Zheng Wang, Cheng Yang, Fen Fen Li, Wen Yu Zhang, Jin Hu Wu
Photocatalytic Reduction of CO2 Using Cu/S-TiO2 Prepared by Electroless Plating Method Zheng Wang1, a, Fenfen Li2, b, Cheng Yang*1, c, Wenyu Zhang2, d, and Jinhu Wu1, e 1 Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science, Qingdao, 266101, P.R.
China 2School of Chemical Engineering, Shandong Institute of Light Industry, Jinan, Shandong,250300, P.R.China awangzheng@qibebt.ac.cn, blifenfen19870302@163.com, cyangcheng@qibebt.ac.cn, dzhangwy051028@126.com, ewujh@qibebt.ac.cn Keywords: CO2, Photocatalytic reduction, Electroless plating, Cu/S-TiO2 Abstract.
The Cu/S-TiO2 material was pressed on the catalyst disk and put into the IR cell.
Results and discussion Fig.3 shows the XRD patterns of the S-TiO2 and Cu/S-TiO2 materials, with TiO2 as comparison.
The three characteristic diffraction peaks of anatase TiO2 at 2θ= 25.28o, 37.80o, 48.05o, were observed for all materials, and anatase phase TiO2 could perform the photocatalytic activity.
Online since: August 2013
Authors: Li Zhu, Yi Ping Wang, Bao Quan Yin, Yong Cui
Solar heating and nocturnal cooling system integrated in refurbished buildings Baoquan Yin1,a, Yiping Wang1,2,b, Li Zhu1,c*, Yong Cui3 1School of Architecture, Tianjin University, Tianjin 300072, China 2School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China 3 Architecture Design Institute of Tianjin University, Tianjin 300072, China aemail:bqy_tj@163.com, bemail:wyp_56@tju.edu.cn, cemail:zly_tj@163.com Keywords: solar heating; nocturnal cooling; radiant panel; heat pump; refurbished buildings; low temperature difference terminals Abstract: Green energy system for the old building retrofitting for energy efficiency upgrade was proposed in this paper, which was composed by solar radiant panels, energy storage, multi-source heat pump and low temperature difference energy supplier.
Overview of proposed system By using solar radiation and nocturnal radiation integrated with indoor terminal and subsystem, radiant panels were put forward to use functionalized traditional construction materials as components in panels.
Radiant panels Radiant panel is the key part of the novel solar heating and cooling system, which is responsible for absorbing solar heat and dissipating heat to the ambient [3].
The radiant piping is constructed between the structure wall and the thermal insulation material, which also contains the heat exchanger with an extended surface in the external tile for heat transfer and reinforced external insulation layer, the system structure see fig 9.
Discussions and Conclusion The radiant panel with both heating and cooling function can be used as a part of structural materials for the building envelope in the building refurbishment, which would realize the perfect integration of building and solar energy technology.
Online since: January 2007
Authors: S.L. Ko, Jung Il Park, Yuri Mikhailovich Baron
All these systems were tested in an experiment with the following conditions: type of the permanent magnets, N33M (Br = 1.17T and Hc = 876kA/m); magnet sizes, 13x13x3 mm; magnetic circuits, shunts and pole pieces, made from steel alloy SM45C/SM20C; material of the ferromagnetic base plate, steel alloy SM45C with height, 5mm; material of the non-magnetic base plate, aluminum alloy; and measuring instrument, Gaussmeter, model 9640 F.
The change in the shunt material to steel SM20C from SM45C did not significantly improve the "switching off" quality.
"Advances in Abrasive Technology YIII," Key Engineering Materials, Switzerland: TTP, 2005, Vols. 291-292, pp. 297-302 (Eng
Online since: June 2014
Authors: Ze Qiang Fu, Na Wu, Yuan Yuan Xie, Peng Shen, Bao Gao
Classification of promoting mechanism of circular economy Circular economy is a complicated system engineering, which involves a very complex level, members of its participation in society is also very extensive.
The eastern region including Shanghai, Jiangsu, Guangdong and other regions, these areas are mainly from the west to buy resources and energy and other raw material to develop economy.
The western regions including Guizhou, Inner Mongolia, Ningxia and other regions, material input level of these areas is relatively low, high resource consumption and waste emissions, low level of material recycling, and often rely on the excessive consumption of natural resources and environment to develop economy.
Circular economy concept has not yet universal, lack of key generic technology, supporting policy and system is not perfect, leading to enterprise to develop circular economy practice's enthusiasm is not high, and the public participation ability and consciousness is not strong.
The government should actively engaged in financial and material resources, advocate the participation of society.
Online since: December 2012
Authors: Wen Qi Lu, Yu Wen Hu, Hu Liu, Wei Min Shi, Xu Dong Hu
Developing a servo motor drive technology with instantaneous heavy load, good control characteristics, superior servo tracking performance is the key[3-14].The load of presses is the impact load, in order to avoid the main power network power fluctuating, short-term heavy load of the servo press driver must provide an energy management device, and the energy stored directly in the side of press, The required peak energy for molding is offered directly from this energy device.
Fig.1 The overall structure block diagram of servo press Parameter Design Different materials and processes require different modes of servo press, the capacitor energy storage device act as power source of a press drive system, energy storage parameter is closely related with the operating mode of press.
In the starting process, the capacitor energy storage device should provide the energy for the motor when it starts normally within rated speed; in the stamping process, as an energy management device of a dedicated drive system of the servo press, capacitor storage parameters should meet the required power and control requirements of the motor at a speed stamping, and this punch speed is determined by the material properties and processes of the processing object.
Table 2 Simulation data of starting process after being improved servo motor drive speed(r/min) 450 400 350 320 450 400 350 three-phase input reactor(mH) 1.4 1.4 1.4 1.4 1.4 1.4 1.4 reservoir capacitance (F) 0.05 0.05 0.05 0.05 0.05 0.05 0.05 maximum load torque(N.M) 3875 3875 3875 3875 3875 3875 3875 speed loop proportional coefficient 200 200 200 200 2 3.5 8 starting acceleration torque overload multiples 1.2 1.5 2.4 4 4 4 4 the bus voltage value at the end of starting(V) 446.6 444.5 439.4 433.5 447.0 444.5 445.5 rectifier bridge output current maximum in the starting process(A) 114 115 117.4 117.4 114.4 118 115 servo motor drive speed steady-state error(%) <0.1 <0.1 <0.1 <0.1 6 4 2 Analysis of output ability In order to make press adapt the processing of different materials, permanent magnet synchronous motor drive system should be able to give sufficient torque to meet the power requirements of a variety of load.
[7] Bojan Vohar, Karl Gotlih, Optimization of Link-Drive Mechanism for Deep Drawing Mechanical Press[J], Journal of Mechanical Engineering, 2002,48(11),:601-612
Online since: February 2019
Authors: Natalya S. Soloveva, D.I. Kinzin, S.A. Levandovskiy
The complexity is not only in quantity, but also in a variety of sizes and materials.
At the same time, information processes are not the end in themselves; their aim is the ultimate control of material flows and their interaction.
AIS of rolls handling facility management will allow to evaluate a number of key indicators that reflect the system's efficiency.
Tretyakov, Rolls of roughing, section, and sheet mills, Moscow, SP INTERMET ENGINEERING, 1999
Kinzin, Improvement of the slitting process for rebar rolling to increase the material yield and rolling mill 370 utilization at PJSC MMK.
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